Life-crystal

Life crystals, found in the system of Rafa, were a mysterious type of crystal that many claimed were good for the body when kept in close proximity. The crystals were harvested from trees that only grew in "Life Gardens" which could only be harvested by manual labor which was reserved for the local less intelligent humanoids and criminals from out of system. In actuality, the trees were a device used to sap the intelligence of the general population, a safety precaution to prevent the conquest of the Sharu civilization.

This effect drained the intelligence of the mythical Sharu, turning them into the Toka. When Lando Calrissian and Vuffi Raa discovered the Mindharp of Sharu, the intelligence of the Toka was restored, turning them back into the Sharu. This action also destroyed the Life Gardens, effectively putting an end to the production of life-crystals.

Before the fall of the Republic, life crystals sold for around five thousand credits, but after the Republic fell, life crystals were only available on the black market at exorbitant prices.[1]